/*
 * Copyright 2021 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.appsearch.localstorage.converter;

import androidx.annotation.NonNull;
import androidx.annotation.RestrictTo;
import androidx.core.util.Preconditions;

import com.google.android.icing.proto.TypePropertyMask;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * Translates a <code>Map<String, List<String>></code> into <code>List<TypePropertyMask></code>.
 *
 * @exportToFramework:hide
 */
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
public final class TypePropertyPathToProtoConverter {
    private TypePropertyPathToProtoConverter() {}

    /** Extracts {@link TypePropertyMask} information from a {@link Map}. */
    @NonNull
    public static List<TypePropertyMask.Builder> toTypePropertyMaskBuilderList(
            @NonNull Map<String, List<String>> typePropertyPaths) {
        Preconditions.checkNotNull(typePropertyPaths);
        List<TypePropertyMask.Builder> typePropertyMaskBuilders =
                new ArrayList<>(typePropertyPaths.size());
        for (Map.Entry<String, List<String>> e : typePropertyPaths.entrySet()) {
            typePropertyMaskBuilders.add(
                    TypePropertyMask.newBuilder().setSchemaType(
                            e.getKey()).addAllPaths(e.getValue()));
        }
        return typePropertyMaskBuilders;
    }
}
